Informações Básicas Sobre Espécies Potenciais E Utilizadas Na Produção De Produtos Não-Madeireiros

Pinheiro, Antônio Lelis; Pinheiro, Daniel Teixeira; Brunetta, Juliana Margarido Fonseca Couto; Couto, Laércio

doi:10.37885/210604964

Cited by 12 publications

(13 citation statements)

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“…Generally, morphological analyzes (height and diameter) of growth in the initial development of species are used to predict the level of tolerance to different irradiances, which can be related to the capacity of the plant to grow and the efficiency of adaptation to the environmental conditions that the plant itself is found. Based on this, it was observed that the response of low growth, expressed that the species did not have adaptive capacity for habitat conditions with intense shade, which tended to present a slower growth, confirming its classification to the initial secondary ecological group that it is inserted, that is, the ecological classification, regarding the light requirement in the successional stage (PINHEIRO, 2011).…”

Section: Resultsmentioning

confidence: 79%

“…This fact confirms the answer of the species: khaya senegalensis, in the secondary ecological succession group. According to Pinheiro (2011), the species of the genus: Khaya are classified as moderately shade tolerant, for example: secondary.…”

Section: Resultsmentioning

confidence: 99%

“…Khaya senegalensis is a species of African origin, which has desirable characteristics such as fast and straight growth and noble wood, being considered of excellent quality and can be planted in regions with prolonged drought (PINHEIRO et al, 2011). It is heliophytic, semi-deciduous, reaching 10 to 30 m in height (ORWA et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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MORPHOPHYSIOLOGICAL RESPONSE OF Khayasenegalensis A. Juss IN LIGHT LEVELS

Pereira¹,

Souza²,

Siebeneichler³

et al. 2023

JER

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For a good development of species with great economic value such as: Khaya senegalensis, which is exotic in Brazil, it is necessary analyzes of intrinsic characteristics to obtain responses of good adaptation to edaphoclimatic conditions in various regions of the country. Thus, the objective of this work was to investigate morphophysiological responses of seedlings of Khaya senegalensis under luminosity levels. An experiment was set up in the forest nursery at ''Universidade Federal do Tocantins'' , distributed in a completely randomized design, divided into five treatments in luminosity levels (full sun, 70, 50, 30% and Natural Shade). Over the months, physiological measurements were taken (Assimilation of CO 2 , Transpiration and stomatal conductance) and morphological (Height and DBH) with intervals of 30 days. At the end of the experiment, the total biomass and mass fractions (leaf, stem, root and total) were obtained. With that, there were significant results among the treatments tested for the species: Khaya senegalensis, because the levels of luminosity influenced the development of the seedlings, which obtained the highest growth rates in plants under partial levels (70, 50 and 30%) of luminosity. And also the physiological responses such as photosynthesis, transpiration and stomatal conductance were higher in high luminosity levels. That said, for the best initial development of the species: Khaya senegalensis regarding luminosity, it was evident that the partial levels (70, 50, 30%) favored the growth and quality of the seedlings, but the low level of light that arrives in the natural shade was not enough to guarantee the vigor of the African mahogany seedlings.

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Section: Resultsmentioning

confidence: 79%

Section: Resultsmentioning

confidence: 99%

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MORPHOPHYSIOLOGICAL RESPONSE OF Khayasenegalensis A. Juss IN LIGHT LEVELS

Pereira¹,

Souza²,

Siebeneichler³

et al. 2023

JER

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“…The five treatments consisted of increasing doses of NPK nutrients, in a 1, 3.5 and 2 proportion respectively, based on the 0.5 g orientation by Pinheiro et al (2011) of NPK 4-14-8 per seedling (Table 2). The treatments were distributed in a completely randomized design with ten replicates.…”

Section: Methodsmentioning

confidence: 99%

Initial fertilization for seedling formations of Khaya senegalensis (desr.) A. JUSS. in nursery

Moura¹,

Souza²,

Silva³

et al. 2023

JER

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The objective of the study was to evaluate the effect of increasing doses of NPK on the initial development of Khaya senegalensis in nursery, aiming to define the ideal dosage of application for the formation of quality seedlings of this species. The plants were cultivated on a substrate of Red Yellow Latosol, with five levels of NPK (0, 0.5, 1.0, 1.5 and 2.0 g per seedling). The treatments were distributed in a completely randomized design with ten replicates. It was observed that Khaya senegalensis is little influenced by the supply of increasing doses of NPK. 1.56 g was the most indicated dosage for its fertilization in nursery.

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“…African mahogany is native to Africa and was initially introduced in the northern region of Brazil, in the 1970s, as an alternative to the exploitation and commercialization of Brazilian mahogany, which is considered a hardwood (Silva 2013, Ribeiro et al 2017, making its marketing unfeasible in addition to its high susceptibility to Hypsipylla grandella (mahogany shoot borers). In contrast to Brazilian mahogany, the African mahogany is resistant to mahogany shoot borers (Maués 2001, Verzignassi et al 2009, Pinheiro et al 2011, Tremacoldi et al 2013, Soares 2014 and has very similar wood characteristics (Pinheiro et al 2011), which has brought attention to its production in other regions of the country (IBÁ 2017), including the Brazilian northeast.…”

Section: Introductionmentioning

confidence: 99%

Phenotypic divergence among half-sib progenies of African mahogany

Cruz

Barroso

Dias

et al. 2022

An. Acad. Bras. Ciênc.

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Divergence studies are essential for the conservation of genetic resources and guidance in genetic improvement programs. This study aimed to assess the phenotypic dispersion of half-sib progenies using Gower's algorithm and the non-metric multidimensional scaling analysis based on qualitative and quantitative traits. Twentytwo half-sib progenies of African mahogany (Khaya senegalensis) were evaluated in a randomized block design with 22 treatments (progenies/origin), with 30 replications and one plant per plot, totaling 660 plants. The total tree height (cm), diameter at soil level (cm), chlorophyll A and B, presence of bifurcation, presence of lateral branches, stem tortuosity, and the phytosanitary and nutritional status according to a rating scale were evaluated. Data analysis was performed at the progeny mean level for the quantitative traits and the modal value was used for the qualitative traits. The technique used presented the distance between the progenies of K. senegalensis in a graphical form. The dispersion of the progenies in the graph is indicative that there is phenotypic variation in the progeny test, allowing to select individuals with characteristics of interest to improve mahogany for Piauí. Gower's algorithm applied to mixed data and non-metric multidimensional scaling are effi cient methods to describe phenotypic similarities between progenies.

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Informações Básicas Sobre Espécies Potenciais E Utilizadas Na Produção De Produtos Não-Madeireiros

Cited by 12 publications

References 0 publications

MORPHOPHYSIOLOGICAL RESPONSE OF Khayasenegalensis A. Juss IN LIGHT LEVELS

MORPHOPHYSIOLOGICAL RESPONSE OF Khayasenegalensis A. Juss IN LIGHT LEVELS

Initial fertilization for seedling formations of Khaya senegalensis (desr.) A. JUSS. in nursery

Phenotypic divergence among half-sib progenies of African mahogany

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